*{
    margin: 0;
    padding: 0;
}

.head{
    position: relative;
    width: 100%;
}
.nav{
    position: absolute;
    margin-left: 50px;
}
.nav ul{
    overflow: hidden;
    line-height: 50px;
}
.nav li{
    list-style: none;
    float: left;
    width: 40px;
    text-align: center;
    margin-left: 5px;
    margin-right: 5px;
}
.nav a{
    text-decoration: none;
    color: #414141;
    font-size: 14px;
}

.row{
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: 2px;
    margin-left: 170px;
    width: 500px;

}
.setting{
    position: relative;
    width: 100%;
    /* background-color: #d44343; */
}
.row a{
    text-decoration: none;
    font-size: 14px;
    color: #414141;
}
.row{position: relative;}
.icon1,.icon2{position: absolute;}
.icon1{
    width: 27px; height: 27px;
    margin-top: 13px;
    margin-right: 10px;
}
.icon2{
    width: 21px; height: 30px;
    margin-top: 10px;
    margin-left: -19px;
}
.adress a{margin-left: 40px;}
.setting ul{
    list-style: none;
    line-height: 50px;
}
.virus a{color: #d44343;}

.setting li{
    float: left;
    text-align: center;
    width: 80px;
    cursor: pointer;
}
.row img{
    padding-top: 10px;
    margin-left: 45px;
}
.personal{
    position: relative;
font-size: 14px;}

.drop-content{
    position: absolute;
    box-shadow: 0px 3px 7px 2px #a79f9f;
    border-radius: 10px;
    display: none;
    z-index: 9999;
}
.row::after{
    content: "";
    display: table;
    clear: both;
}
.drop-content a{
    display: block;
    width: 80px;
    line-height: 30px;
    text-decoration: none;
    font-size: 12px;
}
.personal span:hover{color: #4e64f2;}
.row a:hover{color: #4e64f2;}
.personal:hover .drop-content{display: block;}
.drop-content:hover .drop-content{display: block;}

.main{
    position: relative;
    height: 550px;
}
.center{
    position: absolute;
    left: 50%;
    top: 50%;;
    margin-top: -150px;
    margin-left: -300px;
    width: 670px;
}
.logo img{
    width: 200px;
    margin-bottom: 20px;
}
.logo{text-align: center;}
.search{
    float: left;
    box-sizing: border-box;
}
.search input:focus{
    border: 3px solid #4e64f2;
}
.search input{
    width: 500px;
    padding: 12px 48px 12px 16px;
    border-radius: 10px 0px 0px 10px;
    border: 3px solid #a79f9f;
    outline: none;
}
.camera{
    float: left;
}
.camera img{
    margin-top: 7px;
    margin-left: -32px;
}
.btn{
    float: left;
    
}
.btn button{
    width: 100px;
    height: 45px;
    margin-left: -3px;
    font-size: large;
    color: #ffffff;
    background-color: #4e64f2;
    border-radius: 0px 10px 10px 0px;
    border: 3px solid #4e64f2;
    box-sizing: border-box;
    outline: none;
}